package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;

    /**
     * 分页查询套餐
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(),page.getResult());
    }
    /**
     * 新增套餐和菜品
     * @param setmealDTO
     */
    @Transactional
    @Override
    public void save(SetmealDTO setmealDTO) {
        //插入套餐数据
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);
        //获取新增的套餐id
        Long setmealId = setmeal.getId();
        //获取菜品列表
        List<SetmealDish> dishs = setmealDTO.getSetmealDishes();
        //批量插入菜品
        dishs.forEach(dish -> dish.setSetmealId(setmealId));
        setmealDishMapper.insertBath(dishs);


    }

    /**
     * 根据id查询套餐和菜品
     * @param id
     * @return
     */
    @Transactional
    @Override
    public SetmealVO getById(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);

        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);

        return setmealVO;

    }
    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Transactional
    @Override
    public void update(SetmealDTO setmealDTO) {
        //修改套餐数据
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.update(setmeal);
        //删除菜品数据
        Long setmealId = setmealDTO.getId();
        setmealDishMapper.deleteBySetmealId(setmealId);

        //添加菜品数据
        List<SetmealDish> dishs = setmealDTO.getSetmealDishes();
        //批量插入菜品
        dishs.forEach(dish -> dish.setSetmealId(setmealId));
        setmealDishMapper.insertBath(dishs);

    }
    /**
     * 删除套餐
     * @param ids
     */
    @Transactional
    @Override
    public void delete(List<Long> ids) {
        //判断当前套餐是否在售
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                //当前套餐正在售出，不能删除
                throw new RuntimeException("当前套餐正在售出，不能删除");
            }
        }
        //批量删除套餐数据
        setmealMapper.deleteByIds(ids);
        //批量删除套餐和菜品的关系
        setmealDishMapper.deleteBySetmealIds(ids);

    }
    /**
     * 套餐起售停售
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

}
